package com.baidu.service;

import java.util.List;

import com.baidu.entity.Class;
import com.baidu.entity.ClassAndGrade;
import com.baidu.entity.Grade;

public interface ClassService {
	//�鿴ȫ��
		Class selectClass(int cid);
		List<ClassAndGrade> getAll(); 
		//ɾ��
		int deleteclass(Integer c_id);
		//���
		int addclass(Class classs);
		int addgrade(Grade grade);
}
